Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 206 for “"Flocculation."”.
-
The flocculation of kaolin with polyacrylamides
Flocculation occurs when high molecular mass organic molecules form bridges between particles, causing them to aggregate. This modifies the sedimentation properties of the mineral slurry. Thus classical measures of flocculation, among them the settled bed height and the supernatant turbidity, have …
-
Flocculation and Clarification in Activated Sludge Systems
Made available in DSpace on 2014-12-08T23:56:43Z (GMT). No. of bitstreams: 1 6612407.pdf: 5135179 bytes, checksum: 7baa621e857e38bc86c867c88f6c0f5c (MD5) Previous issue date: 1966
-
Induced flocculation of animal cells in suspension culture
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1989.
-
Bacterial extracellular polymers and flocculation of activated sludges
… role in bacterial aggregation or bacterial flocculation in secondary waste treatment. The mechanisms responsible for this floc formation are thought to be polymer induced adsorption and interparticle bridging among bacterial cells or between bacterial cells and inorganic colloids. The …
-
Microalgae flocculation and sedimentation by physico-chemical property exploitation
The purpose of this research was to characterise the physical properties of microalgae, as a function of growth and suspension conditions, to enable exploitation of these characteristics for improved separation whilst allowing for water recycle.
-
The effects of tank size and impeller type on turbulent flocculation
A basic conceptual and experimental study of the flocculation process is described. The turbulence in three square flocculation reactors of size (6.7in)$\sp3$ ($\approx$5L), 1ft$\sp3$ ($\approx$28L), and (2.7 ft)$\sp3$ ($\approx$560L) with two impeller types (Rushton turbine and A310 fluid foil …
-
Yeast flocculation: understanding cell surface structure-function relationships in industrial yeast strains
… of cells which is also referred to as flocculation. The timing during growth and the causes of onset of yeast flocculation are of commercial interest to the brewing industry, as flocculation can determine the degree of attenuation of the wort. Early or premature flocculation is one …
-
Laboratory Experiments on Mud Flocculation Dynamics in the Fluvial and Estuarine Environments
Due to the flocculation process, suspended mud aggregates carried by rivers and streams can undergo changes in their size, shape, and settling velocity in response to environmental drivers such as turbulence, sediment concentration, organic matter (OM), and salinity. Some have assumed that salt is …
-
Modeling The Impact Of Sediment Resuspension And Flocculation On The Fate Of Polychlorinated Biphenyls
… partitioning behavior. In this study, a flocculation model that simulates flocculation of activated carbon, organic carbon, and inorganic solids ranging in diameter from 2 to 1000 μm has been developed. A multi-class flocculation-based contaminant fate model is adapted to describe …
-
Microbial flocculation for large scale harvesting of marine microalgae for the production of biodiesel.
… of biodiesel and laboratory experiment showed bioflocculation by pH stress is ineffective. Microbial flocculation is based on the principle that by stressing certain bacteria, extracellular polymeric substances (EPS) may be produced to co-flocculated the microalgae. With a dosage of 0.1 g L⁻¹ of …
-
A novel bioadsorption-flocculation fluidized bed bioreactor prior to membrane filtration for wastewater treatment and reuse
As one of the advanced technologies, fluidized bed bioreactor (FBBR) with high treatment efficiency, low operating and capital costs has attracted more attention for wastewater treatment and reuse. The natural based flocculants (NBFs) are environmentally friendly and biodegradable, as well as …
-
Adsorption of Novel Block Copolymers for Steric Stabilization and Flocculation of Colloidal Particles in Aqueous Environments
The adsorption of several homopolymer polypeptides on Al2O3 and SiO2 particles and surfaces was investigated to identify possible anchor and tail blocks for brush-forming block copolypeptides. Poly-L-(glutamic acid) (GLU) and poly-L-(aspartic acid) (ASP) were found to adsorb on positively charged …
-
Characterizing the Growth of Cyanobacteria Using Coiled and Bubble Column Photobioreactors and Its Separation by Flocculation Filtration
<p>This research was conducted with the intention of increasing the cyanobacterial biomass productivity to enhance the biofuel production. In the first part of the research, since the photobioreactors provide ambient growth environment and higher biomass productivity for Anabaena 7120, coiled …
Page 1 of 11